31424902 has 4 divisors (see below), whose sum is σ = 47137356. Its totient is φ = 15712450.

The previous prime is 31424881. The next prime is 31424947. The reversal of 31424902 is 20942413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20942413 = 2897 ⋅7229.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7856224 + ... + 7856227.

It is an arithmetic number, because the mean of its divisors is an integer number (11784339).

Almost surely, 2^31424902 is an apocalyptic number.

31424902 is a deficient number, since it is larger than the sum of its proper divisors (15712454).

31424902 is a wasteful number, since it uses less digits than its factorization.

31424902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712453.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 31424902 is about 5605.7918263168. The cubic root of 31424902 is about 315.5668034648.

The spelling of 31424902 in words is "thirty-one million, four hundred twenty-four thousand, nine hundred two".